Fix build, RecoverySystem.

Change-Id: I8c7fd35e1f352990c3d8e65cf8a0a30ab0a06297
SystemUI : Improve heads up display logic

- Add ticker as a condition for high priority (based on upstream L patch http://goo.gl/Kofy4V)
- Make sure non high priority don't get shown if screen is off or dreaming

Change-Id: I527ac55c641ac45848715a1baae5c44df1381644

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java